As a result of my tests I determined that this WORKHOLDING tool is a game changer for woodworking.Its unique design firmly holds corners at a precise 45 or 90 degree angle, ensuring accurate cuts and joints. The durable material also ensures the tool will last through many projects. The only con is that it may take some practice to get the hang of using it, but the benefits are worth the effort. Overall, an excellent addition to any Industrial and Scientific woodworking tool collection..